Trolley-wire guard.



A. ZANELLA. TROLLEY WIRE GUARD.

APPLICATION ElLED OCT. 29, 1915.

Patented4 May 16, 1916.

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A. ZANELLA.

TROLLEY WIRE' GUARD.

APPLICATION HLED 001.29. 1915.

Patented May 16, 1916.

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' A. ZaheZZa/ swncooeo as narran @rrlfltt APOLLONIO ZANELLA, OF RAY, ARZONA.

TROLLEY-Winn GUARD.

Speccaton of Letterslatent.

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Application filed October 29, 1915. Serial No. 584,648.

.Be itv known vthat I, ,AroLLoNio ZANBLLA, a citizenv of the United States, residing at Ray,l in the county ofPinal and State o'f Arizona. have invented new and useful lImi proveniente in Trolley-fire Guards. of which the following is a specification.

The present invention relates to guards n ith the f eed Wires of electrically propelled vehicles employed in mines or in other-places where, the charged Wires are so lpositioned as to4 be Jeasilycontacted by a person in proximity to the. said Wire, and the object ofthe invention is to provide. such lWires with a shield of non-electric conducting ma- .terial to prevent persons or animals from coming in direc'tlcontact With the Wire.

Other objects and advantages will appear as the'nature ofthe invention is more' fully understood, referencebeing had to the ac#- companying 4drawings in Which there is illus!` trated a simple-:and rsatisfactory reduction of the' improvement to practice.-

In the drawings, Figure 1 is a side elevation of a portion of the guard constructed in accordance With the present invention showing the same applied to the 'Wire showing the 'vvire engagedby a trolley Wheel; Fig. 2 is a transverse section'approximately onlthe line 2--2 of Fig. 1. -F ig..3 is asimilar section approximately ontheline 3-3 of Fig. 1.- Fig. el is a central longitudinal sec'- tional view throughtheimprovement. Fig. 5 is a detail sectional view illustrating the manner in which they-hanger is attached to the shield.- Fig. 6- is aperspective view; parts beingbroken'awav andv parts being shown in section and illiis'trating thel inanner in 'which the hinged clamp isarranged upon the-shield and engages the Wires. F ig.

I -is a 'perspective View of a hinged clamp detached.' Fig. 8 is a' sectional Viewl through the. hinged clampillustratin-g the plates thereof connected by a nut 'and bolt. 1

As is'well known the leads or tunnels in amine are'seldoniv constructed atl a height greater'than the height ofan ordinary man,v and Where electrically'propelled cars ofthe trolley or .overhead systemare employed the trolleyD Wirebeing-suspended from the upper Wall 4or even fromthe side Walls of the lead or tunnel is-vvithin close proximity to the -miners vor.' to .other 4personsl having business in the mines. This 'has frequently resulted in persons accidentally contacting with the energizedf'eed Wires, With dangerous results,

-shall in no'way interfere vvith the contact ofthe trolley ivheelwviththe said Wire.

ln the `drawings the'nuineral 1 designates the feed Wire o f a'trolley lsystem.; and this Wire preferably has its opposite sides formed With longitudinally extending grooves Q.

vMy improved guard comprises'a substantially U-shaped member constructed of some suitable insulated material and is designated by the numeral 3. The sides M of the member-3 are spaced a suitable distance from the' opposite sides ofthe Wire 1 and the ends ofthe sides are preferably flared outwardly as at 5. By this arrangement the trolley Wheel 6 may freely engage With thejvire 1 and also thespace bei tvveenthe sides 4%4 ofthe member 3 is sufficient to accommodatev the upper portion of the har'p7 .upon Which the trolley Wheel 6 `is' rotatablyl mounted.

The member 3 may vhave interior reinforcements Which .are designated by the numerals `88 and these reinforcements may be of metal so that the sides 4; are maintained in proper spaced relation With each other. Passing centrally land longitudinally through the vtop or connecting portion of the'inverted Ueshaped member 3 is a rod 9, and this rod is adapted to provide a pintle for the butts 10. of hinge members 11 having their lower ends curved inwardly as at 13, so that the said portions 13 will engage with the upper portions of the Wire 1, to the opposite sides thereof to permit the edges of the said portions 13 to be received inthe grooves 2 of the Wire. ln order to secure the plates 12 of the hinge 11 ,upon the Wire5 one-of the said plates is provided with a non-threaded'opening which registers With a threaded opening -in the second plate and screws 14e for their threaded shanl; ,passing through the said opening and engaged with the-threads of one of theopenings. @ne of the sides Zfof the member 3 is formed with openings 15' which 'are of a greater area or diameter than that of the heads of the screws 514: and the openings 15 are adapted to" register with `the lrerfed heads of the screvvs so that an instrument -such as a illustrated-in Fig. S of the drawings, headed bolt members 16 may be employed -in` lieu of the screws 11, the -shanks of the same passing through openings in the plates and having their ends engaged by nuts 17 and the nutslare soA arranged with relation` to the rounded portions 13 of one of the plates of the hinge as to contact therewith and so prevent accidental rotation 'of tlie'said nut.

In order to suspend the device the upper or connecting portion of the inverted U-shaped 'member' is provided, at spaced intervals with revoluble bolts 18 received, in

suitable sockets 19 in the said upper portion of the member 3. Thesel bolts may be pro.

i'ided with square wrench heads so that the same may be rotatedto engage in suitable sockets secured to the upper wall or ceiling ofthe lea'd or tunnel.- v

y Thel hinge members'are each centrally formed with outwardlylextending Vdownwardly rounded spring fingers Q0, one of which being arrangedto extend over each of the sides of each of said hinges, and these members contact with the inner sides 11 of the U-shaped member 8, assisting in sustaining the said sides inlproper spaced relation with each other.

Having thus described. the invention what is claiiiiediszv 1. In combination With a feed wire, of a guard of insulated material therefor, said guard having an open bottom, and its sides spaced from thefsides of the feed'wire, a clamping member secured to the top of the guard and impressing the opposite sides of the feed Wire for sustaining the feed Wire approximately central 'in the guard7 means connected with the clamp for engaging `with the sides of the guard forassisting Ain and maintaining thel said sides in spaced relation with each other,-and revoluble hanger members upon the top of the` guard.

:2. In combinationv with a feed' Wire, andl a guard of insulated material surrounding the same, and said. guard being approximately of an inverted U-shape in cross section, of a clamping rmember centrally secured to the guard and extending'inwardly thereof and connecting. the feed wire tliereto,.said clamping member including laterally arranged angularly disposed spring fingers extending over the opposite sides of the clamping member and contacting- 1with the innerand opposite sides of the guard.,

3. The combination lwith a feed vwire and a guard therefor which comprises an insu- -lating member that 'is substantially of an inverted U-shape in cross section, of a rod member embedded-in the central portion of the said guard, clainping'members each including platesI arranged side by side and having one ofl their edges rounded'to provide butts which engage with the rod, each of said plateshaving its lower edge rounded to engage with the opposite sides of the feed wire, securing means for each pair of plates to --hold' the'same in,engagement with the.

wire, and spring fingers connected with the rod and disposed centrally of each of the clamping members and extendinglbeyond the sides thereof to contact with the inner ,sides of thel guard.

In testimony whereof I have a'iiixed ,my signature in presence of two witnesses. 'APOLLOIO ZANELLA.

lVitnesses: y

FRANK BEE, ANTON AxToxioL. 

